In electrical resistance welding, distortion results from the use of improper
Clamping methods
Electrodes
Current
Filler material
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- __________ of test specimens is not involved in any hardness testing method.
- Temper brittleness of a material can be fairly detected by the __________ test.
- The fugacity of liquid water at 298 K is approximately 3171 Pa. Considering the ideal heat of vaporisation…
- Which of the following is not categorised as the ore agglomeration process?
- Corrosion rate cannot be lowered by reducing the __________ of the corroding medium.
- In a drilling process, the metal is removed by both shearing & extrusion. General purpose drills are…
- Cold chisel & hammers are made of
- For dynamic strain measurement, the Wheatstone bridge used is of __________ type.
- The materials which fracture even at small strains are termed as brittle, while those materials which…
- CANDU type nuclear reactor using natural uranium as fuel is the extensively used nuclear reactor because…
- Lead pencil contains
- Eutectic reaction for iron-carbon system occurs at a temperature of __________ °C.
- Which of the following gases cause global warming?
- A material subjected __________ must have high resilience.
- Suitability of steel for its use in cable is judged by its strength in
- Which of the following are made out of the carbon steel having carbon content of 0.9 to 1%?
- The product out from a cupola is called
- Satellites burn off during re-entry to earth's atmosphere, because of the
- Silicon in steel
- Quartz is a __________ material.
- Which of the following is an acidic constituent of B.F. slag?
- __________ has the highest melting point out of the following.
- The mechanism which changes the value of manipulated variable in response to the output signal from…
- Laser is a device to produce
- Encyclopaedia of Chemical Technology has been
- The dimensional formula of bulk modulus of elasticity is same as that of the
- Transformer cores are normally made from
- Pick out the wrong conversion of absolute & kinematic viscosities.
- Volume of blast furnace slag is about __________ times the volume of hot metal (pig iron) of the same…
- In the diving apparatus, helium is used along with oxygen, because it is